I run fast.

good

She jumps high.

good

We swim fast.

good

I walk slow.

good

He reads fast.

good

A cat eat fast.

{A cat} is the third person singular, so please add -s at the end of {eat}.

A cat eats fast.

she hop high.

{she} is the third person singular, so please add -s at the end of {hop}.

she hops high.

They draw fast.

good

I write slow.

good

He shake fast.

{he} is the third person singular, so please add -s at the end of {shake}.

He shakes fast.